Atomics.wait throws when called on the main thread.

gin/public/isolate_holder.h

Index: gin/public/isolate_holder.h
diff --git a/gin/public/isolate_holder.h b/gin/public/isolate_holder.h
index 62b871085805716db97938f3dda6a44888cbfca6..4c558ae4a6bc6165257970bf0fee8add2ced3cbd 100644
--- a/gin/public/isolate_holder.h
+++ b/gin/public/isolate_holder.h
@@ -41,6 +41,12 @@ class GIN_EXPORT IsolateHolder {
     kUseLocker
   };
 
+  // Whether Atomics.wait can be called on this isolate.
+  enum AllowAtomicsWaitMode {
+    kDisallowAtomicsWait,
+    kAllowAtomicsWait
+  };
+
   // Indicates whether V8 works with stable or experimental v8 extras.
   enum V8ExtrasMode {
     kStableV8Extras,
@@ -50,7 +56,8 @@ class GIN_EXPORT IsolateHolder {
   explicit IsolateHolder(
       scoped_refptr<base::SingleThreadTaskRunner> task_runner);
   IsolateHolder(scoped_refptr<base::SingleThreadTaskRunner> task_runner,
-                AccessMode access_mode);
+                AccessMode access_mode,
+                AllowAtomicsWaitMode atomics_wait_mode = kAllowAtomicsWait);

[jochen (gone - plz use gerrit), 2017/02/01 04:34:19]

no default arguments please

[binji, 2017/02/01 23:09:32]

Done.

   ~IsolateHolder();
 
   // Should be invoked once before creating IsolateHolder instances to